{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-54213", "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c", "state": "PUBLISHED", "assignerShortName": "NCSC.ch", "dateReserved": "2026-06-12T09:32:46.514Z", "datePublished": "2026-08-07T09:47:34.613Z", "dateUpdated": "2026-09-07T12:59:55.983Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "455daabc-a392-441d-aa46-37d35189897c", "shortName": "NCSC.ch", "dateUpdated": "2026-09-07T12:59:55.983Z" }, "title": "TeamDavid: Denial of Service via endpoint 'internalRestart'", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "type": "CWE" } ] } ], "affected": [ { "vendor": "Tobit Laboratories AG", "product": "TeamDavid", "modules": [ "Webbox" ], "versions": [ { "status": "affected", "version": "0", "lessThan": "Rollout 528", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Tobit Laboratories AG TeamDavid's Webbox application exposes a functionality that allows the server to be \nshut down when a specific endpoint (/internalRestart) is accessed. This \nendpoint is accessible to unauthenticated users over the public \nInternet. Instead of “restarting”, the server shuts completely down. As a\n result, a remote attacker can trigger a persistent denial of service by\n shutting down the web server without requiring authentication. Recovery\n requires manual administrator intervention to restart the service. This issue affects TeamDavid before Rollout 528.\n\nStarting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Tobit Laboratories AG TeamDavid's Webbox application exposes a functionality that allows the server to be \nshut down when a specific endpoint (/internalRestart) is accessed. This \nendpoint is accessible to unauthenticated users over the public \nInternet. Instead of “restarting”, the server shuts completely down. As a\n result, a remote attacker can trigger a persistent denial of service by\n shutting down the web server without requiring authentication. Recovery\n requires manual administrator intervention to restart the service. 
This issue affects TeamDavid before Rollout 528.
Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.
" } ] } ], "references": [ { "url": "https://chayns.net/77892-10814/tapp/763210?postId=11454", "tags": [ "release-notes" ] }, { "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/", "tags": [ "third-party-advisory" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H" } } ], "credits": [ { "lang": "en", "value": "Dario Weiss of InfoGuard Labs", "type": "finder" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "references": [ { "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-08-07T13:16:49.553112Z", "id": "CVE-2026-54213", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-07T13:17:54.047Z" } } ] } }